@article{UZERU_1986_1_a15,
     author = {O. S. Eritsyan and M. A. Ganapetian},
     title = {The open surface of wave vectors in ferromagnetic media},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {146--148},
     publisher = {mathdoc},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1986_1_a15/}
}